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|Title:||A novel relay auto-tuning technique for processes with integration|
|Authors:||Ho, W.K. |
Proportional plus integral plus derivative controllers
|Source:||Ho, W.K., Feng, E.B., Gan, O.P. (1996-07). A novel relay auto-tuning technique for processes with integration. Control Engineering Practice 4 (7) : 923-928. ScholarBank@NUS Repository. https://doi.org/10.1016/0967-0661(96)00090-1|
|Abstract:||In this paper a novel idea of inserting a differentiator in front of the relay is presented. This technique is applicable to a process with integration. The advantage is that the time taken for the relay experiment can be shortened by as much as 100%. A special case of an asymmetrical relay - relay with DC bias - is also analysed. This paper shows that a common process model used in the industry - the first-order plus dead-time process model - can be obtained from the oscillation produced by the relay with DC bias. Once a process model is obtained, many controller design techniques are available. The techniques described in this paper were successfully implemented in a laboratory experiment on a tank level system.|
|Source Title:||Control Engineering Practice|
|Appears in Collections:||Staff Publications|
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